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Otrada [13]
3 years ago
12

A direct variation function contains the points (2, 14) and (4, 28). Which equation represents the function?

Mathematics
1 answer:
vitfil [10]3 years ago
4 0
A direct variation has a constant slope, i.e. (y/x)= constant.

Both of the given two points give a slope of (y/x)=14/2=28/4=7, so the equation of the function is
y/x=7, or simply
y=7x
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Jack spent half of his weekly allowance on candy to earn more money his parents let him mow the lawn for $7 what is his weekly a
joja [24]
$18. You get this because you subtract 7 from 16 since that’s money he got. You get 9. Since Jack spent half his allowance money, you double the money he had left after spending it, giving you $18.
4 0
3 years ago
A dairy scientist is testing a new feed additive. She chooses 13 cows at random from a large population of cows. She randomly as
mina [271]

Answer:

Step-by-step explanation:

Given that a dairy scientist is testing a new feed additive. She chooses 13 cows at random from a large population of cows. She randomly assigns nold = 8 to get the old diet, and nnew = 5 to get the new diet including the additive.

From the data given we get the following

           N       Mean      StDev     SE Mean

Sample   1    8           43       5.1824 1.832

Sample   2   5           73     21.0832 9.429

df = 11

Std dev for difference = 13.3689

a) Yes the two are independent.  The two sets of cows randomly chosen are definitely independent. Paired means equal number should be there and homogeneous conditions should be maintained.

b) Enclosed

c) Comparison of two means is the test recommended here.  Because independent samples are used.\

d) Test statistic= -3.1233

(because of unequal variances we use that method)

95% confidence interval =  ( -56.6676 , -3.3324 )

p value <0.05 our alpha

So reject null hypothesis.

The two means are statistically significantly different.

3 0
3 years ago
·A nutritionist recommends that an adult male consume 55 grams of per day. It is acceptable for the fat intake to differ from th
baherus [9]
This is the answer I hope
It helps

4 0
3 years ago
Y = -5 + 6 -----------
andreyandreev [35.5K]

Answer:

y = -5 + 6=1 is your answer

6 0
3 years ago
Read 2 more answers
How much orange juice at 45 a liter should be mixed with grapefruit juice worth 35 a liter to make 200 liters of a mixture worth
miss Akunina [59]
The amount of liters is 200,if the orange juice is x than grape juice. 200-x
45x+35(200-x)=200*40
45x+7000-35x=8000
10x=1000
x=100
5 0
3 years ago
Read 2 more answers
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